<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="姓名" id="i1">
<input type="text" placeholder="工资" id="i2">
<input type="text" placeholder="工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="1">
    <caption>员工列表</caption>
    <tr>
        <th>姓名</th><th>工资</th><th>工作</th>
    </tr>
</table>
<script>
    let i1=document.querySelector("#i1")
    let i2=document.querySelector("#i2")
    let i3=document.querySelector("i3")
    function f(){
        let tr=document.createElement("tr")
        let nameTd=document.createElement("td")
        let salTd=document.createElement("td")
        let jobTd=document.createElement("td")
        nameTd.innerText=i1.value;
        salTd.innerText=i2.value;
        jobTd.innerText=i3.value;
        tr.append(nameTd,salTd,jobTd);
        let table=document.querySelector("table")
        table.append(tr)
    }

</script>

</body>
</html>